#406 SerialInterface/UsbUartCH340G

Notes

The CH340G is a USB to UART Interface chip. It is often used as a cheap alternative to
more established brands and products such as the FTDI FT232RL.
The CH340G is commonly found in:

Arduino Nano clones

USB to Serial adapters

In this project, I'd like to see how easy it is to build a USB to Serial interface
on a breadboard. To test it out, I'll use it program Arduino sketches on an ATmega328P.

CH340G Key Specs

CH340 is produced by WCH 江苏沁恒股份有限公司 (Jiangsu Yuheng Co., Ltd.).
It is a series of USB adapters - with variants providing serial, parallel or IrDA interfaces.
The CH340G supports serial with common flow control signals.